CN113324467A - Device and method for monitoring equivalent icing thickness of lead based on ice dielectric capacitance effect - Google Patents
Device and method for monitoring equivalent icing thickness of lead based on ice dielectric capacitance effect Download PDFInfo
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- CN113324467A CN113324467A CN202110584496.1A CN202110584496A CN113324467A CN 113324467 A CN113324467 A CN 113324467A CN 202110584496 A CN202110584496 A CN 202110584496A CN 113324467 A CN113324467 A CN 113324467A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
- G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
- G01B7/08—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness using capacitive means
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
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Abstract
The invention discloses a device and a method for monitoring wire equivalent icing thickness based on an ice medium capacitance effect, wherein the device comprises a control unit, a power taking unit and a high-frequency excitation power supply conversion unit are connected through a wire; the high-frequency excitation power supply conversion unit is connected with the monitoring unit through a lead; the monitoring unit is connected with the control unit through a lead; the technical problems that the thickness and the state of ice coating on the wire of the power transmission line cannot be accurately monitored in the prior art are solved.
Description
Technical Field
The invention belongs to the technical field of icing thickness monitoring, and particularly relates to a device and a method for monitoring equivalent icing thickness of a lead based on an ice dielectric capacitance effect.
Technical Field
The ice coating of the power transmission line seriously harms the safe operation of the power grid, and the ice coating of the power transmission line can greatly reduce the mechanical and electrical properties of the power transmission line, so that accidents such as galloping, collapse, disconnection and the like are caused, the serious influence is brought to the life and the production of people, and huge economic loss is caused. At present, there are many methods for acquiring the data of the ice coating on the wire of the power transmission line, such as an on-line monitoring and early warning method, a wire sag measurement method, a weather monitoring method and a weighing method. In the online monitoring and early warning method, the related ice coating online monitoring equipment of the online monitoring and early warning method works in a strong electric field and a complex atmospheric environment for a long time, so that the equipment has the problem of poor reliability. The conductor sag measurement method calculates equivalent icing thickness through sag measurement, and meanwhile, the device and the method for measuring the conductor icing thickness are simple, however, the method has higher precision only between towers with large span and during remote observation. The meteorological monitoring method is that meteorological information such as temperature, wind speed, wind direction and air humidity around the power transmission line is collected by meteorological monitoring equipment, and then the icing thickness is indirectly predicted through an icing prediction model. The weighing method which is most widely applied has the advantages of convenient installation of the sensor and simple calculation model, but the stress sensor has complex long-term working environment and is easy to have the problem of low reliability.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the device and the method for monitoring the equivalent icing thickness of the wire based on the ice dielectric capacitance effect are provided, so that the technical problems that the icing thickness and the state of the wire of the power transmission line cannot be accurately monitored in the prior art are solved.
The technical scheme of the invention is as follows:
a wire equivalent icing thickness monitoring device based on an ice dielectric capacitance effect comprises a control unit, wherein a power taking unit is connected with a high-frequency excitation power supply conversion unit through a wire; the high-frequency excitation power supply conversion unit is connected with the monitoring unit through a lead; the monitoring unit is connected with the control unit through a lead.
The electricity taking unit comprises an energy taking coil, and the energy taking coil is an electromagnetic mutual inductor; the energy-taking coil is connected with a lead to take electricity from the lead; the output end of the energy taking coil is connected with the rectifying circuit; the rectifying circuit is connected with the filter circuit; the filter circuit is connected with the voltage stabilizing circuit; the voltage stabilizing circuit is connected with the protection circuit.
The monitoring unit is an equidistant three-electrode parallel capacitor.
The output frequency of the high-frequency excitation power supply conversion unit is more than 1 Mhz.
The monitoring method of the wire equivalent icing thickness monitoring device based on the ice dielectric capacitance effect comprises the following steps:
step 1, additionally arranging an insulating layer on a lead where a monitoring unit needs to be fixed;
step 2, mounting an equal-interval three-electrode parallel capacitor on the insulating layer;
step 3, locking the equal-spacing three-electrode parallel capacitors by using a lock catch;
step 4, the control unit calculates the icing thickness value;
and 5, transmitting the ice coating thickness value to a monitoring terminal through a remote communication unit.
The equidistant three-electrode parallel capacitor adopts a ring capacitor.
The method for calculating the icing thickness value comprises the following steps:
capacitive sensor formula
In the formula: s is the electrode area and d is the electrode spacing; when the electrode area and the electrode distance are fixed, the integral capacitance between the electrodes changes along with the increase of the ice coating thickness; therefore, the change of the ice coating thickness is reflected by measuring the capacitance value of the ice layer; the basic relationship between the ice coating thickness and the capacitance is C ═ kXDeC is the ice coating capacitance in pF, D is the ice coating thickness in mm, and k and e are the ice coating type and ice coating shape correlation coefficients.
The method for sending the ice coating thickness value to the monitoring terminal through the remote communication unit comprises the following steps: and realizing dynamic online monitoring of monitoring data and state by adopting a communication mode of a mobile phone APP and a mobile phone module.
The invention has the beneficial effects that:
according to the wire icing monitoring process, the icing of the wire of the power transmission line is automatically monitored, the icing thickness and the state of the wire are accurately monitored, and the safety operation of the power transmission line is guaranteed, so that the icing disaster of the power transmission line caused by the fact that the icing of the power transmission line exceeds the expectation is prevented, the safety and the stability of the whole power transmission line are further guaranteed, various faults and disasters caused by overload of ground wire icing are avoided, and the economic loss and the social influence caused by disaster shutdown of the power transmission line are avoided; the technical problems that the thickness and the state of ice coating on the wire of the power transmission line cannot be accurately monitored in the prior art are solved.
Description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a monitoring unit according to the present invention;
FIG. 3 is a schematic diagram of a capacitor electrode structure according to the present invention;
FIG. 4 is a schematic diagram of a power-taking unit according to the present invention.
The specific implementation mode is as follows:
a wire equivalent icing thickness monitoring device based on an ice dielectric capacitance effect comprises a control unit, wherein a power taking unit is connected with a high-frequency excitation power supply conversion unit through a wire; the high-frequency excitation power supply conversion unit is connected with the monitoring unit through a lead; the monitoring unit is connected with the control unit through a lead.
The electricity taking unit comprises an energy taking coil, and the energy taking coil is an electromagnetic mutual inductor; the energy-taking coil is connected with a lead to take electricity from the lead; the output end of the energy taking coil is connected with the rectifying circuit; the rectifying circuit is connected with the filter circuit; the filter circuit is connected with the voltage stabilizing circuit; the voltage stabilizing circuit is connected with the protection circuit.
The monitoring unit is an equidistant three-electrode parallel capacitor.
The method adopts the mode of adopting an equidistant three-electrode parallel capacitor as a monitoring unit and adopts the principle of a capacitance sensor formula
εrIs the relative dielectric constant of the medium,. epsilon0Dielectric constant of vacuum is 8.854X 10-12F/m, S is the area of the capacitor plate, and the unit is m2And d is the distance between the capacitor plates and is expressed in m. When the area S and the distance d of the capacitor pole plates are fixed, the integral capacitance between the pole plates can be changed along with the increase of the ice coating thickness, so that the change of the ice coating thickness can be reflected by measuring the capacitance value of an ice layer; and fixing the annular fastening type electrode on the lead by adopting a lock catch type mode. The invention is based on the capacitance value variation equivalent icing thickness algorithm, and obtains the basic relation between the ice thickness and the capacitance through a large number of icing experiments of the structure electrode, wherein C is k multiplied by DeC is icing capacitance (unit is pF), D is icing thickness (unit is mm), k and e are icing types, and the coefficient related to icing shape; based on the relation, the built-in algorithm can calculate the icing thickness through the icing capacitor; the value of k is known according to simulation calculation and a large number of experimental resultsThe range is 20-24, and the value range of e is 0.15-0.29.
When coming winter, adopt cell-phone APP application program to start monitoring devices in advance, when overhead transmission line wire icing under the icing condition, the wire surface area between the electric capacity electrode covers the ice sheet, along with the increase of ice sheet thickness, the electric capacity between the electrode changes, because the dielectric constant of ice dielectric medium is about 3, the electric capacity between the electrode after icing changes littly, in order to improve the measurement accuracy, the invention adopts the way that three electrodes connect in parallel the electric capacity as the unit, also include and arrange many monitoring units and improve the electric capacity variable quantity in the way that the unit connects in parallel near the wire, thus reach the method to improve the monitoring accuracy.
The invention adopts a standard comparison curve and a formula which are obtained by a large number of experimental results between preset capacitance change and ice coating increment, and is preset in a controller.
The invention provides a method for automatically taking electricity by a lead, which obtains the work and control power supply of a monitoring device through an electromagnetic induction coil when the lead transmits load current, and is provided with an energy storage device to ensure that the monitoring device continues to work for a certain time when power is cut off.
The invention provides a high-frequency excitation power supply converted from a power frequency power supply, which is used for more accurately measuring the variable quantity of a capacitor and optimizing the frequency and amplitude of high-frequency excitation. The output frequency of the high-frequency excitation power supply conversion unit is more than 1 Mhz.
The invention adopts the communication mode of the mobile phone APP and the mobile phone module to realize the implementation dynamic online monitoring of the monitoring data and the state.
By adopting the conductor icing monitoring process, the automatic monitoring of the icing of the conductor of the power transmission line is realized, the icing thickness and the state of the conductor are accurately monitored, and the guarantee is provided for the safe operation of the power transmission line, so that the icing disaster of the power transmission line caused by the icing exceeding the expectation is prevented, the safe and stable operation of the whole power transmission line is further ensured, various faults and disasters caused by ground wire icing overload are avoided, and the economic loss and social influence caused by disaster shutdown of the power transmission line are avoided.
The icing thickness of the wire can be accurately monitored in real time, related personnel are timely informed of the icing state of the power transmission line in a mobile phone communication and APP application program mode, and then necessary technical means are adopted to prevent the power transmission line from icing disaster accidents, so that power supply failure and power transmission line disasters caused by overload of the wire icing are avoided. The method can dynamically monitor the icing state in real time under the condition that the power transmission line is not powered off, has the advantages of wider applicable range and no influence of meteorological conditions, and can ensure that the icing safety state of the power transmission line can be mastered in time, thereby preventing the power transmission line from icing disasters caused by icing overload of the wire, ensuring the safe and stable operation of a power transmission line system, and avoiding huge economic benefits and social influences caused by accidents and disasters caused by icing of the wire.
Claims (8)
1. A wire equivalent icing thickness monitoring device based on an ice dielectric capacitance effect comprises a control unit and is characterized in that: the power taking unit is connected with the high-frequency excitation power supply conversion unit through a lead; the high-frequency excitation power supply conversion unit is connected with the monitoring unit through a lead; the monitoring unit is connected with the control unit through a lead.
2. The device for monitoring the equivalent wire icing thickness based on the ice dielectric capacitance effect as claimed in claim 1, wherein: the electricity taking unit comprises an energy taking coil, and the energy taking coil is an electromagnetic mutual inductor; the energy-taking coil is connected with a lead to take electricity from the lead; the output end of the energy taking coil is connected with the rectifying circuit; the rectifying circuit is connected with the filter circuit; the filter circuit is connected with the voltage stabilizing circuit; the voltage stabilizing circuit is connected with the protection circuit.
3. The device for monitoring the equivalent wire icing thickness based on the ice dielectric capacitance effect as claimed in claim 1, wherein: the monitoring unit is an equidistant three-electrode parallel capacitor.
4. The device for monitoring the equivalent wire icing thickness based on the ice dielectric capacitance effect as claimed in claim 1, wherein: the output frequency of the high-frequency excitation power supply conversion unit is more than 1 Mhz.
5. The method for monitoring the equivalent wire icing thickness monitoring device based on the capacitance effect of the ice medium as claimed in claim 1, which comprises the following steps:
step 1, additionally arranging an insulating layer on a lead where a monitoring unit needs to be fixed;
step 2, mounting an equal-interval three-electrode parallel capacitor on the insulating layer;
step 3, locking the equal-spacing three-electrode parallel capacitors by using a lock catch;
step 4, the control unit calculates the icing thickness value;
and 5, transmitting the ice coating thickness value to a monitoring terminal through a remote communication unit.
6. The monitoring method of the device for monitoring the equivalent wire icing thickness based on the ice dielectric capacitance effect as claimed in claim 5, wherein the monitoring method comprises the following steps: the equidistant three-electrode parallel capacitor adopts a ring capacitor.
7. The monitoring method of the device for monitoring the equivalent wire icing thickness based on the ice dielectric capacitance effect as claimed in claim 5, wherein the monitoring method comprises the following steps: the method for calculating the icing thickness value comprises the following steps:
capacitive sensor formula
In the formula: s is the electrode area and d is the electrode spacing; when the electrode area and the electrode distance are fixed, the integral capacitance between the electrodes changes along with the increase of the ice coating thickness; therefore, the change of the ice coating thickness is reflected by measuring the capacitance value of the ice layer; the basic relationship between the ice coating thickness and the capacitance is C ═ kXDeC is the ice coating capacitance in pF, D is the ice coating thickness in mm, and k and e are the ice coating type and ice coating shape correlation coefficients.
8. The monitoring method of the device for monitoring the equivalent wire icing thickness based on the ice dielectric capacitance effect as claimed in claim 5, wherein the monitoring method comprises the following steps: the method for sending the ice coating thickness value to the monitoring terminal through the remote communication unit comprises the following steps: and realizing dynamic online monitoring of monitoring data and state by adopting a communication mode of a mobile phone APP and a mobile phone module.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115265350A (en) * | 2022-08-17 | 2022-11-01 | 重庆大学 | Method for detecting thickness and density of ice layer based on three-electrode cylindrical array capacitance effect |
Citations (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB286792A (en) * | 1926-12-11 | 1928-03-12 | Richard Lovell Cleaver | Improvements in circuits and apparatus for use in amplifiers working at radio frequencies |
| GB825179A (en) * | 1956-04-30 | 1959-12-09 | Giardino Loris | Improvements in or relating to electromechanical measuring devices |
| FR74187E (en) * | 1958-01-24 | 1960-11-07 | Soc De Traitements Electrolytiques Et Electrothermiques | Improvements to induction hardening devices |
| DE3308141A1 (en) * | 1983-03-08 | 1984-09-13 | Martin 7120 Bietigheim-Bissingen Lang | Method for detecting icing on energy roofs and air-type heat exchangers of heat pumps |
| US4766369A (en) * | 1986-03-31 | 1988-08-23 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Ice detector |
| US4941363A (en) * | 1988-08-11 | 1990-07-17 | Siemens Aktiengesellschaft | Sensor for measurement of the torque acting on a rotating shaft |
| CA1283449C (en) * | 1987-05-28 | 1991-04-23 | Government Of The United States As Represented By The Administrator Of The National Aeronautics And Space Administration (The) | Ice detector |
| DE4031210A1 (en) * | 1990-10-04 | 1992-04-09 | Bosch Gmbh Robert | CAPACITIVE SENSOR FOR MEASURING A FUEL WALL FILM |
| US6384611B1 (en) * | 1996-11-18 | 2002-05-07 | The B. F. Goodrich Company | Ice thickness detector |
| US20110079027A1 (en) * | 2009-10-02 | 2011-04-07 | The Controls Group, Inc. | Removal of an accumulated frozen substance from a cooling unit |
| CN202204614U (en) * | 2011-08-25 | 2012-04-25 | 王孝敬 | Monitoring device for measuring lead wire sag and lead wire temperature of overhead transmission line |
| CN103292683A (en) * | 2013-05-31 | 2013-09-11 | 太原理工大学 | Capacitive sensing type detection device and detection method for ice cover thickness of overhead power transmission lines |
| CN204575024U (en) * | 2015-03-19 | 2015-08-19 | 河南东力重工机械有限公司 | A kind of structure detecting the capacitive transducer of metal plate and belt thickness |
| CN205825894U (en) * | 2016-06-22 | 2016-12-21 | 刘思楚 | A kind of inner diameter measuring device |
| CN106767639A (en) * | 2017-03-06 | 2017-05-31 | 贵州电网有限责任公司电力科学研究院 | A kind of vertical span obtaining value method under icing operating mode |
| US9691669B1 (en) * | 2015-08-28 | 2017-06-27 | Pdf Solutions, Inc. | Test structures and methods for measuring silicon thickness in fully depleted silicon-on-insulator technologies |
| CN107228646A (en) * | 2017-06-27 | 2017-10-03 | 贵州电网有限责任公司电力科学研究院 | A kind of equivalent ice covering thickness computational methods of transmission line of electricity |
| US20170307349A1 (en) * | 2016-04-20 | 2017-10-26 | Duke University | Non-Invasive Thickness Measurement Using Capacitance Measurement |
| CN107367529A (en) * | 2017-08-15 | 2017-11-21 | 芯海科技（深圳）股份有限公司 | Coagulate white sensor and with the evaporator for coagulating white detection function |
| CN107607439A (en) * | 2017-08-22 | 2018-01-19 | 西安工程大学 | A kind of transmission pressure icing type automatic identification equipment and recognition methods |
| CN109038445A (en) * | 2018-08-23 | 2018-12-18 | 国网湖南省电力有限公司 | A kind of electrification deicing topology system and its de-icing method based on step-down capacitor |
| CN109059355A (en) * | 2018-07-20 | 2018-12-21 | 广东美的制冷设备有限公司 | Heat exchanger frosting detection device, heat exchanger, air conditioner and its defrosting control method |
| CN109085196A (en) * | 2018-10-30 | 2018-12-25 | 西南大学 | Single capacitor expansion indicator |
| CN109752282A (en) * | 2019-02-28 | 2019-05-14 | 西安工程大学 | Icing sensor and its transmission line icing monitoring system and monitoring method of application |
| CN109799272A (en) * | 2019-01-28 | 2019-05-24 | 西安工程大学 | A kind of composite insulator icing growth monitoring system based on capacity effect |
| CN110044976A (en) * | 2019-04-17 | 2019-07-23 | 淮阴师范学院 | For detecting the interdigital capacitive sensor of Q235 corrosion of carbon steel |
| CN110146008A (en) * | 2019-05-16 | 2019-08-20 | 西安工程大学 | Based on the icing parameter of interdigital capacitor sensor and the monitoring method of state |
| CN209764004U (en) * | 2019-05-24 | 2019-12-10 | 西安工程大学 | Icing thickness measuring device based on variable-medium capacitive sensor |
| CN210090238U (en) * | 2019-02-28 | 2020-02-18 | 西安工程大学 | Transmission line icing monitoring system |
| CN211001244U (en) * | 2016-07-22 | 2020-07-14 | Lg伊诺特有限公司 | Rainwater sensor and wiper drive device |
| CN111998814A (en) * | 2020-08-26 | 2020-11-27 | 贵州电网有限责任公司 | Method for obtaining icing thickness of power transmission line and overhead power transmission line and calculating instrument |
| CN112815817A (en) * | 2021-01-19 | 2021-05-18 | 上海集成电路装备材料产业创新中心有限公司 | Non-contact capacitive sensor device |
-
2021
- 2021-05-27 CN CN202110584496.1A patent/CN113324467B/en active Active
Patent Citations (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB286792A (en) * | 1926-12-11 | 1928-03-12 | Richard Lovell Cleaver | Improvements in circuits and apparatus for use in amplifiers working at radio frequencies |
| GB825179A (en) * | 1956-04-30 | 1959-12-09 | Giardino Loris | Improvements in or relating to electromechanical measuring devices |
| FR74187E (en) * | 1958-01-24 | 1960-11-07 | Soc De Traitements Electrolytiques Et Electrothermiques | Improvements to induction hardening devices |
| DE3308141A1 (en) * | 1983-03-08 | 1984-09-13 | Martin 7120 Bietigheim-Bissingen Lang | Method for detecting icing on energy roofs and air-type heat exchangers of heat pumps |
| US4766369A (en) * | 1986-03-31 | 1988-08-23 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Ice detector |
| CA1283449C (en) * | 1987-05-28 | 1991-04-23 | Government Of The United States As Represented By The Administrator Of The National Aeronautics And Space Administration (The) | Ice detector |
| US4941363A (en) * | 1988-08-11 | 1990-07-17 | Siemens Aktiengesellschaft | Sensor for measurement of the torque acting on a rotating shaft |
| DE4031210A1 (en) * | 1990-10-04 | 1992-04-09 | Bosch Gmbh Robert | CAPACITIVE SENSOR FOR MEASURING A FUEL WALL FILM |
| US6384611B1 (en) * | 1996-11-18 | 2002-05-07 | The B. F. Goodrich Company | Ice thickness detector |
| US20110079027A1 (en) * | 2009-10-02 | 2011-04-07 | The Controls Group, Inc. | Removal of an accumulated frozen substance from a cooling unit |
| CN202204614U (en) * | 2011-08-25 | 2012-04-25 | 王孝敬 | Monitoring device for measuring lead wire sag and lead wire temperature of overhead transmission line |
| CN103292683A (en) * | 2013-05-31 | 2013-09-11 | 太原理工大学 | Capacitive sensing type detection device and detection method for ice cover thickness of overhead power transmission lines |
| CN204575024U (en) * | 2015-03-19 | 2015-08-19 | 河南东力重工机械有限公司 | A kind of structure detecting the capacitive transducer of metal plate and belt thickness |
| US9691669B1 (en) * | 2015-08-28 | 2017-06-27 | Pdf Solutions, Inc. | Test structures and methods for measuring silicon thickness in fully depleted silicon-on-insulator technologies |
| US20170307349A1 (en) * | 2016-04-20 | 2017-10-26 | Duke University | Non-Invasive Thickness Measurement Using Capacitance Measurement |
| CN205825894U (en) * | 2016-06-22 | 2016-12-21 | 刘思楚 | A kind of inner diameter measuring device |
| CN211001244U (en) * | 2016-07-22 | 2020-07-14 | Lg伊诺特有限公司 | Rainwater sensor and wiper drive device |
| CN106767639A (en) * | 2017-03-06 | 2017-05-31 | 贵州电网有限责任公司电力科学研究院 | A kind of vertical span obtaining value method under icing operating mode |
| CN107228646A (en) * | 2017-06-27 | 2017-10-03 | 贵州电网有限责任公司电力科学研究院 | A kind of equivalent ice covering thickness computational methods of transmission line of electricity |
| CN107367529A (en) * | 2017-08-15 | 2017-11-21 | 芯海科技（深圳）股份有限公司 | Coagulate white sensor and with the evaporator for coagulating white detection function |
| CN107607439A (en) * | 2017-08-22 | 2018-01-19 | 西安工程大学 | A kind of transmission pressure icing type automatic identification equipment and recognition methods |
| CN109059355A (en) * | 2018-07-20 | 2018-12-21 | 广东美的制冷设备有限公司 | Heat exchanger frosting detection device, heat exchanger, air conditioner and its defrosting control method |
| CN109038445A (en) * | 2018-08-23 | 2018-12-18 | 国网湖南省电力有限公司 | A kind of electrification deicing topology system and its de-icing method based on step-down capacitor |
| CN109085196A (en) * | 2018-10-30 | 2018-12-25 | 西南大学 | Single capacitor expansion indicator |
| CN109799272A (en) * | 2019-01-28 | 2019-05-24 | 西安工程大学 | A kind of composite insulator icing growth monitoring system based on capacity effect |
| CN210090238U (en) * | 2019-02-28 | 2020-02-18 | 西安工程大学 | Transmission line icing monitoring system |
| CN109752282A (en) * | 2019-02-28 | 2019-05-14 | 西安工程大学 | Icing sensor and its transmission line icing monitoring system and monitoring method of application |
| CN110044976A (en) * | 2019-04-17 | 2019-07-23 | 淮阴师范学院 | For detecting the interdigital capacitive sensor of Q235 corrosion of carbon steel |
| CN110146008A (en) * | 2019-05-16 | 2019-08-20 | 西安工程大学 | Based on the icing parameter of interdigital capacitor sensor and the monitoring method of state |
| CN209764004U (en) * | 2019-05-24 | 2019-12-10 | 西安工程大学 | Icing thickness measuring device based on variable-medium capacitive sensor |
| CN111998814A (en) * | 2020-08-26 | 2020-11-27 | 贵州电网有限责任公司 | Method for obtaining icing thickness of power transmission line and overhead power transmission line and calculating instrument |
| CN112815817A (en) * | 2021-01-19 | 2021-05-18 | 上海集成电路装备材料产业创新中心有限公司 | Non-contact capacitive sensor device |
Non-Patent Citations (4)
| Title |
|---|
| YINKE DOU 等: "The Study of a Capacitance Sensor and its System Used in Measuring Ice Thickness, Sedimentation and Water Level of a Reservoir", 《2009 INTERNATIONAL FORUM ON INFORMATION TECHNOLOGY AND APPLICATIONS》 * |
| 尹芳辉 等: "导线表面电场强度对导线覆冰的影响", 《高电压技术》 * |
| 敦卓: "电容感应式架空输电线路覆冰厚度模拟监测传感器及其系统的研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》 * |
| 薛盈等: "电容感应式架空输电线路覆冰厚度传感器的研究", 《数学的实践与认识》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115265350A (en) * | 2022-08-17 | 2022-11-01 | 重庆大学 | Method for detecting thickness and density of ice layer based on three-electrode cylindrical array capacitance effect |
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| Publication number | Publication date |
|---|---|
| CN113324467B (en) | 2023-03-31 |
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